| Ln（BO3,PO4）[Ln=La,Y]基质中Ce^3＋、Tb^3＋、Gd^3＋的光谱 |
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| 引用本文： | 丁士进,徐宝庆,等.Ln（BO3,PO4）[Ln=La,Y]基质中Ce^3＋、Tb^3＋、Gd^3＋的光谱[J].光谱学与光谱分析,2001,21(3):275-278. |
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| 作者姓名： | 丁士进 徐宝庆 |
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| 作者单位： | [1]复旦大学电子工程系，上海200333 [2]浙江大学化学系，杭州310028 |
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| 摘 要： | 研究了硼磷酸镧和硼磷酸钇基质中Ce^3 、Tb^3 、Gd^3 的发射光谱和激发光谱。结果表明：La(BO3,PO4):Ce,Tb体系中加入钆后，Ce^3 的 发射降低，Tb^3 的发射增强，Y（BO3，PO4）：Ce,Tb体系中加入钆后，Ce^3 和Tb^3 的发射均增强，且前者增加的幅度高于后者。因此在La(BO3,PO4):Ce,Tb,Gd体系中Gd^3 离子起着能量传递中间体和敏化剂的作用；在Y（BO3，PO4）：Ce,Tb,Gd体系中Gd^3 离子只起敏化剂作用，并且阻碍Ce^3 →Tb^3 的能量传递。与Y（BO3，PO4）：Ce,Tb,Gd相比，La(BO3,PO4):Ce,Tb,Gd对紫外吸收强，254nm激发下发出的光绿色纯度,强度大，更适合做荧光灯中的绿粉。
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| 关 键 词： | 铈 铽 钆 光谱 能量传递 荧光灯 发光材料 荧光粉 绿粉 硼磷酸镧 硼磷酸钇 |
| 修稿时间： | 1999年10月19 |
Spectra of Ce |
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| S Ding,W Zhang,B Xu,J Wang.Spectra of Ce[J].Spectroscopy and Spectral Analysis,2001,21(3):275-278. |
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| Authors: | S Ding W Zhang B Xu J Wang |
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| Institution: | Department of Electronic Engineering, Fudan University, 200433 Shanghai. |
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| Abstract: | Emission and excitation spectra of Ce3+, Tb3+ and Gd3+ in lanthanum borophosphate and yttrium borophosphate are studied. The results show that Ce3+ emission weakens and Tb3+ emission enhances in La(BO3, PO4):Ce, Tb in the presence of Gd, and in Y(BO3, PO4):Ce, Tb, the Ce3+ and Tb3+ emissions are all enhanced, and the former increases more than the latter. In a whole, Gd3+ acts as intermediate of energy transfer from Ce3+ to Tb3+ and sensitizer in La(BO3, PO4):Ce, Tb, Gd; while in Y(BO3, PO4):Ce, Tb, Gd, Gd3+ acts only as sensitizer, and prevents energy transfer from Ce3+ to Tb3+. Compared with Y(BO3, PO4):Ce, Tb, Gd, La(BO3, PO4):Ce, Tb, Gd, phosphor absorbs ultraviolet radiation easily, and emits green light with higher purity and intensity under 254 nm excitation, so it is more suitable for green-emitting phosphor in fluorescent lamp. |
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